US2528315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming tubular l's
Assignee: Dresser Industries Inc
•
Filing: 1945-05-15
•
Granted: 1950-10-31
•
Expires: 1965-05-15
Abstract
No abstract record available.
Inventors
- 👤 Clyde J Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:50
CPC Classifications
B; B21; B21D; B21D9/00; B21D9/08
Claims Analysis
Total Claims: 0
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US2044322A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |